Ron,
Pretty much any firmware revision on a switch that supports sampling will permit traffic monitoring via sampling (versus via stats), though if you're using 54xx or 35xx switches you may want to get the latest firmware as some sFlow bugs have been fixed in these switches over the last few months. For traffic monitoring via stats any firmware revision should work on virtually any ProCurve switch model as stats mode simply relies on standard MIB counters (primarily from the interface MIB).
In PCM traffic monitoring there is a top talkers screen that you can get to by clicking the "Details" button under whichever gas gauge interests you. The gauges show you the top talker in that category during the last minute, and the top talker screen that comes up shows you what has been happening on that port for the last hour. In terms of accuracy, the "envelope" values shown are based on standard counters so they should be quite accurate; the traffic "content" estimated on sampled ports is generally accurate, although as the traffic levels drop it becomes less so (but also presumably also less interesting). I'm sure others will have more insight to offer on accuracy.
Unfortunately there is no reporting capability. What kind of reports would you like to see, over what time frame, and with what granularity (per minute, etc.)? We're always looking for ideas.
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PCM 2.2 is supposed to release soon (June 1 I think). I suggest that you upgrade to it - I believe it's a free upgrade to people that already have PCM 2.x - as traffic monitoring was vastly restructured in it. The beta feedback for PCM 2.2 has been very positive, particularly on traffic monitoring. But there still aren't any reports, which is why your feedback here could help shape PCM 2.3 or its successors.
Regards,
SVB
